The thing is I used to run Garmin in my Old 6.2” NO name Chinese all in one DVD Resolution was 480_234.
Now I install new 7” DVD +Gps same as NO name but Resolution is 800_480 I put same card in new unite after changed unlock code Garmin Running fine only problem is map showing in 2 part On 7” DVD + GPS. 1 part is about 6” and on right side part about 1”.
Any idea how to fix screen resolution in garmin?